Chemistry-
General
Easy
Question
Bohr’s model can explain
- the spectrum of hydrogen atom only
- spectrum of atom or ion containing one electron only
- the spectrum of hydrogen molecule
- the solar spectrum.
The correct answer is: spectrum of atom or ion containing one electron only
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X- rays of wavelength equal to 0.134 nm give a first order diffraction from the surface of a crystal when the value of is 10.5° The distance between the planes in the crystal parallel to the surface is (sin 10.5° = 0.1822)
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A solid AB has NaCl type structure. If the radius of the cation A is 100 pm, then the radius of the anion B will be
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A binary solid 
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A substance Ax By crystallizes in a face centred cubic (FCC) lattice in which atoms ‘A’ occupy each corner of the cube and atoms ‘B’ occupy the centres of each face of the cube. Identify the correct composition of the substance AxBy
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In a solid AB having the NaCl structure, ‘A’ atoms occupy the corners of the cubic unit cell. If all the face-centred atoms along one of the axes are removed, then the resultant stoichiometry of the solid is
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